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NPA: 301 [Rate centres in NPA 301] [Dial plan for NPA 301]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
301-872 5 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 6 Ridge MD WASHDC127MD  073H TELNYX LLC 236   2024-02-04   
301-872 7 Ridge MD WASHDC127MD  073H TELNYX LLC 236   2024-02-04   
301-872 8 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-872 9 Ridge MD RIDGMDRIRS0  9212 VERIZON MARYLAND, INC. 236      
301-873 A Washington Zone 3 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-874 A Buckeystown MD BCTWMDBTRS1  9212 VERIZON MARYLAND, INC. 240      
301-875 A Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
301-875 0 Laurel MD CHCHMDBE1MD  8697 BALTIMORE-WASHINGTON TELEPHONE (BWT) 236   2004-11-20   
301-875 1 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-08-07   
301-875 2 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-01-02   
301-875 3 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-05-02   
301-875 4 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2008-05-02   
301-875 5 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 6 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 7 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 8 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-875 9 Laurel MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2006-04-24   
301-876 A Cumberland MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240      
301-876 0 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 1 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 2 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 3 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2003-03-05   
301-876 4 Cumberland MD FRDRMDFRXMD  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 240   2002-07-27   
301-876 5 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2004-08-23   
301-876 6 Cumberland MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2021-12-09   
301-876 7 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2004-09-06   
301-876 8 Cumberland MD CMLDMDCM5MD  4720 USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD 240   2004-08-23   
301-876 9 Cumberland MD   071F BANDWIDTH.COM CLEC, LLC - MD 240   2004-01-25   
301-877 A Washington Zone 16 MD CLTNMDCLDS0  9212 VERIZON MARYLAND, INC. 236      
301-878 A Baltimore MD BLTOMDKHDS0  7228 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 238      
301-879 A Washington Zone 12 MD SLSPMDCVDS0  9212 VERIZON MARYLAND, INC. 236      
301-880 A Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-880 0 Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-29   
301-880 1 Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236   2004-12-29   
301-880 2 Lexington Park-Great Mills MD LXPKMDLXDS0  9212 VERIZON MARYLAND, INC. 236   2005-09-01   
301-880 3 Lexington Park-Great Mills MD   829J PAETEC ITEL, LLC 236   2005-04-05   
301-880 4 Lexington Park-Great Mills MD MCLNVA23DS4  6119 LEVEL 3 COMMUNICATIONS, LLC - MD 236      
301-880 5 Lexington Park-Great Mills MD   829J PAETEC ITEL, LLC 236   2005-10-07   
301-880 6 Lexington Park-Great Mills MD BTVLMD12CMA  5562 METROPCS, INC. 236   2011-10-25   
301-880 7 Lexington Park-Great Mills MD   829J PAETEC ITEL, LLC 236   2007-12-14   
301-880 8 Lexington Park-Great Mills MD WASIDCRG7MD  508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
301-880 9 Lexington Park-Great Mills MD SLSPMD91DS0  568G PEERLESS NETWORK OF MARYLAND, LLC 236   2013-05-03   
301-881 A Washington Zone 11 MD RKVLMDMRDS0  9212 VERIZON MARYLAND, INC. 236      
301-882 A New Market MD HGTWMD53DS0  2593 CORE COMMUNICATIONS, INC.- MD 240      
301-882 0 New Market MD FRDRMDFRPS0  2593 CORE COMMUNICATIONS, INC.- MD 240   2004-05-09   
301-882 1 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-06-26   
301-882 2 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2010-10-17   
301-882 3 New Market MD HGTWMDHGDMD  071F BANDWIDTH.COM CLEC, LLC - MD 240   2011-07-02   
301-882 4 New Market MD FRDRMDFRXTX  318J COMCAST IP PHONE, LLC 240   2013-08-16   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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